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PS0021 Datasheet(PDF) 1 Page - Power IC Ltd. |
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PS0021 Datasheet(HTML) 1 Page - Power IC Ltd. |
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1 / 12 page  PS0021 High Efficiency PFM Step-up DC/DC Converter DESCRIPTION FEATURES PFM control Asynchronous Booster The PS0021 compact, high-efficiency, step-up DC- DC converters are available in tiny, 3-pin thin SOT23 and 6-pin thin SOT26 packages. They feature an extremely low 5µA quiescent supply current to ensure the highest possible light-load efficiency. Optimized for operation from one to two alkaline or nickel-metal-hydride (NiMH) cells, or a single Li+ cell, these devices are ideal for applications where extremely low quiescent current and ultra-small size are critical. Up to 90% Efficiency Quiescent Supply Current: 5µA Zero Shutdown current Output Voltage Accuracy: ±1% Fixed Output Voltage Provides 20mA from single AAA cell Input Voltage Range: 0.8V to 5.5V Startup Voltage : 0.9V 3L SOT-23 and 6L SOT-26 Package APPLICATIONS The PS0021 also feature proprietary noise- reduction circuitry, which suppresses electromagnetic interference (EMI) caused by the inductor in many step-up applications. The family offers different combinations of fixed outputs, shutdown, and EMI reduction (see Selector Guide). Wireless mice, keyboard Pagers Remote Controls Wireless Headsets Wireless Transmitters Personal Medical Devices Digital Still Cameras Its unique design is optimized for high efficiency at light load condition. MP3/MP4 Players Single-Cell Battery-Powered Devices Low-Power Hand-Held Instruments TYPICAL APPLICATION CIRCUIT July 2007 www.picsemi.com © 2007 Power IC. All Rights Reserved. 1 |
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